Method and apparatus for molding concrete pipes.



E. L, MXNSUMB METHD AND APPARATUS POB MLHI'HNG ONRETE PIPE.

APPLICATION FILED FEB. I 19W, BLMBWEB NV116,1908.

Patented J an. A26, 1909 W! TIVESSES E. L. BANSME.

METHOD AND APPARATUS FOR MOLDNG CONCRETE PIPES.

APPLIATGN PUJ'JD T, 100K". HENEWED NOVJG, 1908.

Patented J an. 26, 1909.

2 SHBBTS-SHBET 2.

/f ATTORNEY smaller classes of METHOD AND APPARATUS FOR MOLDING CONCRETE PIPES.

Specification oi' Letters Patent.

Pntented Jan. 26, 1909.

Application filed February 7, 1907, Serial NoA 350,183. Renewed November 16, 190B. Serial No. 462,916.

i make and use the same.

My invention relntcs cspcciellyto molding;l monolithic concrete pi es 'in situ, such for example as is disclose( in my prior patent No. 517,808, granted April 3, 1894. These ipes are usually laid with a metallic reinoreing member or material embedded therein. In the apparatus of my prior patent ,above referred to, this reinforcmg member is in the form of :iv-ire laid in the pipe duringr the formation thereof, in a continuous s iiral by the unwinding action of a rcel on w rich the reinforcing,r wire is primarily carried. This arrangement in some classes of work is inconvenient and an important object of my presentinvention is`to simplify the work of placing the reinforcing memleer, therebyy adapting the invention to eil'cctvo und sulvantageous use in the construction ol' the ipe. In attaining this end, I dispense with the reel and construct the reinforce in the form of cylindric coges of reinforce metal, which cages are made in couvenient lengths, and laced in the trench end to end and suitably astened together. The. pi e is laid 'in sito in a monolithic course enve opin the reinforce members forminr e practica l indestructible structure. li'urther, in t e construction of those.,monolithic pipes .to which my inventionrelates, it is customary to employ a molding apparatus cornprising an outer mold section or sections und an inner section or core. In the operation ol' such apparatus difiiculty is experienced in retaining the. core in position to insure the formation 0f a pipe the. walls of which ure of uniform thickness. With the. reinforce members formed in seperate cage-like sections, n similar diiliculty would he ex icrieneed. It is, therefore, a further object ol my invention to insure that the core and reinforce members are held in proper position relative. to the outer mold section or sections so that. the walls ofthe )ipe will he of uniform thickness and the rein oree member or nuiteriul will lie in the proper position in tho walls of the pipe.

effectingA this end consist in guiding moans netintr between the core, the reinforcement und the outer mold section and insuring that nll of the parts retain their proper position nud also preventing relative rotation of said purts durimjr the tamping of the concrete. lhis preferred arrangement, however, 1s not essential, und if desired, the menus for retniniug the coro und the means for retaining the reinforcement may he separate and independent ngcneies.

My invention involves various other fen.- tures of major or minor importance, und all will be fully set forth hereinafter and par ticularly pointed out in the claims. i

For the urpose of a speciiic disclosure of my invention, reference is now had to the accompanying drawings which illustrate, as an example, the details of the preferred manner of'. practicing the invention, in which drawings, i

Figure 1 is a side elevation of the apparatus showing it in operation in a trench and forming,r a continuous monolithic ipe therein; Fig. 2 is an enlarged longitur inal section showing,r part of the core and the intermediate portion of io outer mold, this view also illustrating tl reinforce cages and the devices i'or retaining?r the same and the core in place, Fig. 3 is a cross section on the line .'j--B of Fig. 2 showing the bottom mold section or shoe and the forwardmost reinforce cage in section. and illustrating the core and side guiding or retaining devices in elovation; Fig. 4 is a frwfmentar sectional plan on the line 4--4 ofIfig. 2, s rowing the relation of the guiding devices to the outer mold section, thc reinforce and the shoe; Fig. 5 is on enlarged detail section of the devices for sustaiuinpr the reinforce cage on the shoe of the outer mohl section and lor preventing rotative movement of said eswc. and of the core, and Fig. 6 is a sectionalj view similar to Fig. 5, but showing a slightly modified arrangement.

/is shown best in Fi". 1, the apparatus is formed with a top molil section or cage l0, und a bottom section or shoe 1l, connected, if desired. at each side. hy u. horizontal member l2. rl`he mold sections 10 and 11 are usually semi-circular in cross section and are arranged opppsitely to each other each having a front edge sloping downwardly and forwardly. The apparatus is also provided with e core 14 which is usually of the same Preferably in my invention, the. devices for cross sectional form as the outer mold seelm' l'mming: monolithic mncref; pipe situ, l lm'cc, whereby tu hold tlm reinforce in posilmlli adapted 10 lm allvnnrlwl prngrivsslvoly f limi and sustain the vom wiiilmut interfering with flu :ilnrcsuiil progfi'cssiv movement of tlm mulal :mil mire.

I3w Tim mmbinatim nl' a molding apparaf ms im lmming mmmlitllic cmwrcl pipo 'in sim. said nippamhm :Mapu-l lu advance pro- ;i'vsiwljv with illu llimmtinn ul' the pipe, a. iviul'urm plm uliivli tlm molding apparatus muvo tlm ruinl'ur'c'u Hicluptml in lm mwvlopod in mill bj: the pip@ mi it is formed uml a guiding means attached tu me uf said 11i-:iris uml inning: sliding ungalmiwnt with l lo ntlwx, xslie'llolif; il lmlll ilu'y ivililolcl in puitiem wil lmut imurl'eriug; willi. tlm miel prngmssive muvmnonl nl tlm molding apparatus.

Ell N MHT LES] il'l Vl ANSOMI).

Willwssus:

,llir'ln J. FULLER, l'. Amxm wnmw. 

